Keystones — Cornerstone
Five GCSE retrieval questions · 12 April 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄5 + 1⁄3
Answer: 11⁄15 -
2. Algebra Two-step equations
Solve: 8x - 10 = 46
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 20cm and 21cm
Answer: 29cm -
4. Ratio Sharing in a ratio
Share 126 in the ratio 3:4
Answer: 54 and 72 -
5. Statistics Mean
Find the mean of: 2, 15, 4
Answer: 7